The Quantum Hybrid Base DBMS 1.4.0 release has been released
The Quantum Hybrid Base DBMS 1.4.0 release has been released
Post date:
New modules
The QHB Qbayes extension is a toolkit created by the QHB development team for calculating probabilistic models using Bayesian networks. The initial data for various calculations can be stored in tables and views within the QHB database. This data includes historical facts (triggering or non-triggering of hypotheses) and their corresponding causes (parameters). Parameters are considered to be logical (binary) values or scalar quantities that are converted to discrete values using extension methods and divided into user-defined ranges. Hypothesis values are always assumed to be logical (binary). After pre-processing the historical facts (training), the model allows for calculating the conditional probabilities of the same hypotheses under new conditions (new parameter values).
The QHB Disk Cache Dump module provides a mechanism for saving and restoring the contents of the disk cache. It allows you to save the contents of the disk block cache manager in the file system and then load it back, thus restoring the previous state. This eliminates the need for warm-up time for the instance.
Added
Qbackup: Added support for remote backup using the replication protocol
Qbackup: Added the replica subcommand for creating a server replica
Qbackup: Added support for CDC (Change Data Capture) for incremental backups
Qbackup: Added the ability to create a quick checkpoint before backing up
Qbackup: Added an option that allows new incremental backups to be based on the most recent successful backups
Qbackup: Added the ability to specify a comment for a backup when it is created
Qbackup: Expanded the capabilities of the remove command
QDL: Added a compatibility mechanism with CDC
QDL: Added support for receiving data from stdin
QCP: Added support for a list of stand_by servers for automatic switching to a backup server in case of loss of connection with the current database server
Improvements
QBackup: Increased the speed of incremental backup recovery by 2 times
QDL: Significantly improved the performance of the multi-threaded mode
